I am very pleased with having purchased this Air Purifier. I am using it in our large kitchen where we spend a lot of time and it is situated next to the parakeet bird cages. The birds throw off a lot of dander, feathers and seed throughout the day and the Breath Smart air purifier handles this quite well. In addition With the air purifier set on automatic you will only hear it running when the cooking smell causes it to increase the fan speed. The pre filter is easy to check and vacuum off when needed.
It truly has made a noticeable difference